Hoisting device.



H. W. SESSOMS.

HOISTING DEVICE.

APPLIOATION :FILED SEPT. zo, 1912A Patented Ja11.21, 1913.

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H. W. SBSSOMS.

HOISTING DEVICE.

APPLIGATION FILED SBF120, 1912.

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H. W. SESSOMS.

HOISTING DEVICE.

APPLICATION FILED sE1 T 2o, 1912.

Patented J an. 21, 1913.

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III

HUG-II W. SESSOIVIS, OF ARLINGTON, WASHINGTON.

I-IOISTING DEVICE.

To all w/wm t may concern Be it known that I, I-IUGH W. SnssoMs, acitizen of the United States, residing at Arlington, in t-he county ofSnohomish and State of Vashington, have invented new and usefulImprovements in Hoisting Devices, of which the following is aspecification.

This invention relates to an improved system of and apparatus forhoisting.

The invention has for its object to produce an improved hoisting devicewhich shall be particularly applicable to be used on hillsides wherelogging operations are in progress for the purpose of transporting thelogs to the base of the hill.

A further object is to simplify and improve the construction of theapparatus whereby the operation is carried into practice.

With these and other ends in view which will readily appear as thenature of the invention is better understood, the same consists in theimproved construction and novel arrangement and combination of partswhich will be hereinafter fully described and particularly pointed outin the claims.

In the accompanying drawings has been illustrated a simple and preferredform of the invention, it being, however, understood that no limitationis necessarily made to the precise structural details therein exhibited,but that changes, alterations and modifications within the scope of theclaims may be resorted to when desired.

In the drawings-Figure 1 is a diagrammatic face view of a hillside onwhich the improved hoisting device has been installed. Fig. 2 is aperspective detail view of the hoisting car supporting the block and aportion of a tackle. Fig. 3 is a perspective detail view showing a carloaded with lumber and the sling or choker and a portion of the tag linewhereby it is connected with the hoisting block. Fig. 4 is a top planview of the hoistinlg block. Fig. 5 is a transverse sectional view takenon the line 5 5 in Fig. 1. Fig. 6 is a plan view of the hoisting blockwith the top plate detached.

Corresponding parts in the several figures are denoted by likecharacters of reference.

In carrying this invention into practice a straight or nearly straightrailroad track 1 is constructed on the side of a hill A, said trackextending from the to-p or crest of the hill, indicated at B, to thebase C, where the Specification of Letters Patent.

Application filed September 20, 1912.

Patented J an. 21, 1913.

Serial No. 721,424.

main line may be continued and where a siding 2 is provided. The track 1communicates at intervals with spurs 3 which are constructed at variouspoints on the hillside, substantially at right angles to the track 1,and the gradient of said spurs being approximately level, or as nearlyso as possible. Each of the spurs 3 has a siding 4 which alsocommunicates with the main line 1. Switches of well known constructionare provided wherever needed, as indicated at S.

At the top of the hill, adjacent to one side of the track l, isinstalled a hoisting apparatus including a hoisting drum 5, a brake drum6 and a motor 7 for driving the hoisting drum. The hoisting rope 8, oneend of which is connected with and wound on the hoisting drum is guidedover a. block D which is supported on a special hoisting car E, theother end of the rope being anchored at 9 to a stump or some othersuitable fixed point.

The car E that supports the block D is an ordinary flat car of suitabledimensions'. The block D which is supported on said car is composed oftop and bottom plates 10, 11 which are spaced apart by means of channelbars 12 interposed therebetween; the top and bottom plates being boltedor otherwise secured on the flanges of said channel bars. The channelbars 12, as will be best seen in Fig. 6, are suitably arranged in such amanner as not to obstruct the sheaves 13, 14: and 15, the journals ofwhich, 16, are supported in the top and bottom plates. Said top andbottom plates are reinforced by external channel bars 17 and 18 throughwhich the journals 16 of the sheaves are extended, thereby materiallyreinforcing the bearings of said sheaves and enabling them to resist aheavy strain.

The block is provided at intervals with means, such as hooks 19, for theattachment of guy ropes 20, whereby the block is connected with the carE in such a manner that it may shift its position laterally, whennecessary in order to accommodate itself to various eXigencies withoutbecoming detached from the car. Ihe hoisting rope or element 8 is guidedover the several sheaves 13, 14 and 15, as will be best seen in Fig. Gof the drawings.

rI`he logs are in practice loaded on ordinary flat cars F, and each loadis secured by means of a link or choker 21, as best seen in Fig. 3. Theblock D is provided with a to the foot of the hill.

bracket or arm 22 with which a strong hook 23 is pivotally connected bymeans of a pin or bolt 24 in such a manner that it may swing in avertical plane. Connected with the hook 23 is one end of a tag line 25which is provided at suitable intervals with eyes or links 26 with whichthe slings or chokers 21 are to be suitably connected. It Will be seenthat the load of the car F is connected directly with the block B whichis supported by the hoisting element; the guy ropes 20 that connect theblock with the hoisting car E will support only the weight of said carand are, therefore, free from excessive strain.

In the operation of this invention, let it be assumed that the cars areplaced on the siding 2 at the foot of a hill. The hoisting line is nowpaid out from the drum 5, the weight of the hoisting car E beingsufficient to take the line to the bottom of the grade. IVhen thehoisting car E reaches the foot of the hill, the empty cars areconnected therewith, and the hoisting engine is now utilized to pullsaid cars above the siding associated with the spur on which saidempties are to be used, and after the proper switch has been throwndrops them to the siding where a locomotive operating on the spur canget them. After the cars are loaded, the locomotive takes them to thepoint where the spur joins the track l. The hoisting car E is lowered,as before, and is utilized to pull the loaded cars up the grade past theswitch on the track 1, and after the switch has been thrown, the carsare lowered on the track 1 The cars on being lowered are not to becoupled together, but each individual car is connected with the tag lineby means of the sling or choker, thus throwing the weight of each car onits indi vidual sling or choker and keeping the logs from sliding on thecar.

Having thus described the invention, what is claimed as new, is

1. In a hoisting device, a track constructed on an inclined plane, a cartraveling on the track, a block supported on the car, guy ropesconnecting the block with the car, a hoisting drum at the top of theinclined plane, a flexible hoisting element connected with the drum andguided over the block, and an anchor with which the hoisting element isconnected.

2. In a hoisting device, a car arranged to travel on an inclined plane,and a block supported on said car, said block comprising top and bottomplates, interposed channel bars with which said top and bottom platesare connected, channel bars secured externally on the top and bottomplates, and sheaves arranged between the top and bottom plates andhaving journals extending through said plates and through the externalchannel bars.

3. In a hoisting device, a car traveling on an inclined plane, a blocksupported on the car, a flexible hoisting element guided around thesheaves of the block, means for tensioning the hoisting element, a hookhingedly connected with the block, a tag line connected with the hookand provided with eyes at intervals thereof, and load carrying carshaving slings or chokers connected with the eyes of the tag line.

In testimony whereof I affix my signature in presence of two witnesses.

HUGH w. snssoMs.

Witnesses: A

J. C. BEESON, LEO WELsoN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C.

